I have been using NGUI for several months now with no problems...
I just reformatted my machine and now when I start a new project and create a new atlas - I cant add any new sprites (textures) to the atlas. Adding fonts works fine, but no new textures. The add/update all button appears like it should, but it does not add the sprite. I've tried with several dozen different textures with the same result.
Any suggestions?